Space optical fiber flexible irradiation protection sleeve and preparation method thereof

Abstract

The invention discloses a space optical fiber flexible irradiation protection sleeve and a preparation method thereof. The space optical fiber flexible irradiation protection sleeve comprises an optical fiber tight sleeve, an inner weaving layer, an outer weaving layer and an outer layer protection sleeve which are sequentially wrapped; the optical fiber tight sleeve and the outer layer protectionsleeve are made of plastic; the inner weaving layer takes the optical fiber tight sleeve as the weaving core diameter, and the outer weaving layer takes the inner weaving layer as the weaving core diameter; and metal wires such as a copper wire are adopted as a weaving material. By adopting the high-density metal wires and a high-density weaving process, a flexible irradiation protection layer isformed on an optical fiber outer layer, and thus optical fibers do not generate a function failure under the harsh irradiation condition and can be expanded and bent under the effect of small torque.

Description

technical field [0001] The invention relates to a flexible radiation protection sleeve for optical fiber used in space and a preparation method thereof, belonging to the technical field of radiation protection of optical fiber. Background technique [0002] As a special carrier for optical signal transmission, optical fiber is widely used in national life, industrial production and scientific research. With the maturity of optical fiber and corresponding derivative technologies of optical fiber, the application of optical fiber has gradually expanded to the aerospace field, such as optical fiber gyroscope, atomic magnetometer (Zhangheng 01 satellite) and quantum unit (Mozi satellite), etc. [0003] The main material of the optical fiber is SiO 2 , is a special glass, the material will be damaged under the irradiation of cosmic rays, resulting in the irreversible optical power transmission loss of the optical fiber, which makes the equipment relying on the optical fiber to t...

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Problems solved by technology

[0003] The main material of the optical fiber is SiO 2 , is a special glass, the material will be damaged under the irradiation of cosmic rays, resulting in the irreversible optical power transmission loss of the optical fiber, which makes the equipment relying on the optical fiber to transmit the optical signal to fail

[0004] At present, optical fiber manufacturers mainly conduct optical fiber research and development for the ground use environment, and do not consider the radiation impact in space to carry out corresponding anti-radiation design. Difficult to withstand large doses of cosmic ray exposure without functional failure

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